A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
The invention discloses a preparation method of alpha-Al2O3, which comprises the following steps: adding alpha-Al2O3 nano-particle seed crystal into boehmite dispersion liquid, and drying and calcining to obtain alpha-Al2O3 powder; and the size of the alpha-Al2O3 nano particle crystal seed is 3 to 24 nm. According to the alpha-Al2O3 preparation method disclosed by the invention, the high-purity alpha-Al2O3 powder is prepared at a relatively low calcination temperature, the method does not need to add other component seed crystals or other component additives, and the alpha-Al2O3 powder is high in purity and low in calcination temperature.
本发明公开一种α‑Al2O3制备方法，包括以下步骤：把α‑Al2O3纳米颗粒晶种加入到勃姆石分散液中，经过干燥煅烧后得α‑Al2O3粉体；所述的作为α‑Al2O3纳米颗粒晶种尺寸为：3‑24nm。本发明α‑Al2O3制备方法在较低煅烧温度下制备得到了高纯度α‑Al2O3粉体，该方法无需添加其他成分晶种或其他成分助剂，α‑Al2O3粉体纯度高，煅烧温度低。
The invention discloses a preparation method of alpha-Al2O3, which comprises the following steps: adding alpha-Al2O3 nano-particle seed crystal into boehmite dispersion liquid, and drying and calcining to obtain alpha-Al2O3 powder; and the size of the alpha-Al2O3 nano particle crystal seed is 3 to 24 nm. According to the alpha-Al2O3 preparation method disclosed by the invention, the high-purity alpha-Al2O3 powder is prepared at a relatively low calcination temperature, the method does not need to add other component seed crystals or other component additives, and the alpha-Al2O3 powder is high in purity and low in calcination temperature.
本发明公开一种α‑Al2O3制备方法，包括以下步骤：把α‑Al2O3纳米颗粒晶种加入到勃姆石分散液中，经过干燥煅烧后得α‑Al2O3粉体；所述的作为α‑Al2O3纳米颗粒晶种尺寸为：3‑24nm。本发明α‑Al2O3制备方法在较低煅烧温度下制备得到了高纯度α‑Al2O3粉体，该方法无需添加其他成分晶种或其他成分助剂，α‑Al2O3粉体纯度高，煅烧温度低。
Alpha-Al2O3 preparation method
一种α-Al2O3制备方法
JIANG SHENGNAN (author)
2024-04-26
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
Low-temperature preparation method of nano alpha-Al2O3 ceramic
| European Patent Office | 2024
Aluminum-silicon castable added with alpha-Al2O3 micro powder and preparation method thereof
| European Patent Office | 2021
Effect of surfactants on preparation of nanoscale alpha -Al2O3 powders by oil-in-water microemulsion
| British Library Online Contents | 2013